<template>
  <el-breadcrumb class="app-breadcrumb" separator-class="el-icon-d-arrow-right">
    <transition-group name="breadcrumb">
      <el-breadcrumb-item v-for="(item, index) in levelList" :key="item.path">
        <span
          v-if="item.redirect === 'noRedirect' || index == levelList.length - 1"
          class="no-redirect"
        >
          {{ menuLocal[item.meta.titleKey] || item.meta.title }}
        </span>
        <a v-else @click.prevent="handleLink(item)">
          {{ menuLocal[item.meta.titleKey] || item.meta.title }}
        </a>
      </el-breadcrumb-item>
    </transition-group>
  </el-breadcrumb>
</template>

<script>
import pathToRegexp from 'path-to-regexp'
import { mapState, mapGetters } from 'vuex'

export default {
  data() {
    return {
      levelList: null
    }
  },
  computed: {
    ...mapState('app', ['language']),
    ...mapGetters(['menuLocal'])
  },
  watch: {
    $route() {
      this.getBreadcrumb()
    }
  },
  created() {
    this.getBreadcrumb()
  },
  methods: {
    getBreadcrumb() {
      // only show routes with meta.title
      const matched = this.$route.matched.filter(
        item => item.meta && item.meta.title
      )
      // console.log(this.$route)
      // const first = matched[0]

      // if (!this.isDashboard(first)) {
      //   matched = [{ path: '/' }].concat(matched)
      //   // matched = [{ path: '/dashboard', meta: { title: 'Dashboard' }}].concat(matched)
      // }

      this.levelList = matched.filter(
        item => item.meta && item.meta.title && item.meta.breadcrumb !== false
      )
    },
    // isDashboard(route) {
    //   const name = route && route.name
    //   if (!name) {
    //     return false
    //   }
    //   return name.trim().toLocaleLowerCase() === 'Dashboard'.toLocaleLowerCase()
    // },
    pathCompile(path) {
      // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
      const { params } = this.$route
      var toPath = pathToRegexp.compile(path)
      return toPath(params)
    },
    handleLink(item) {
      const { redirect, path } = item
      if (redirect) {
        this.$router.push(redirect)
        return
      }
      this.$router.push(this.pathCompile(path))
    }
  }
}
</script>

<style lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
  display: inline-block;
  font-size: 14px;
  line-height: 50px;
  margin-left: 8px;

  .no-redirect {
    color: #97a8be;
    cursor: text;
  }
}
</style>
